考虑高阶位移模式的层板热稳定有限元分析

Thermal Buckling Analysis of Laminated Plate by Use of Finite Element Method Based on Higher Order Theory

本文用高阶理论对层板的热稳定进行了有限元分析,算例表明文中方法是精确的。文中给出了层板热稳定的数值结果,并讨论了铺层方向、铺层数量、边界条件、板的长宽比、材料的纵横弹性常数比以及温度分布等对失稳特性的影响,由此得出了一些有用的结论。

The buckling behaviour of composite laminates for critical temperatures under nonuniform temperature field is investigated by the finite element method based on the higher order theory. The validation checks on the program are carried out using available results in the literature. Numerical results are presented for fiber-reinforced laminates and show the effects of ply orientation, number of layers, different boundary conditions, different aspect ratios, various modulus ratios, uniform and nonuniform temperatures field , varying ratios of coefficient of linear thermal expansion, etc. , on the buckling behaviour. Certain conclusions have been drawn based on these results.